Male flowers globose when young, elongating when mature to 5.2 × 3.8 mm; calyx to 2.8 mm, lobes to 2 mm, usually with a regular margin; corolla sometimes narrowed into a short receptacular-stalk to 1 mm; filaments, shorter row to 2.2 mm, longer row to 2.5 mm, broad, to 0.4 mm, with adaxial keel, triangular in cross section; pistillode sometimes present. R. excelsa is quite cold hardy, tolerating temperatures as low as -5 degrees C and can be grown outdoors in subtropical or warm temperate climates. This is a small genus of shrubby palms native to Asia. Native to southern China and Taiwan, these plants are not found in the wild; all known plants come from cultivated groups. Lady Palms adapt to a wide range of climates, soils, and environments. Brown leaftips are often caused by an excessive accumulation of fertiliser salts in the potting mix. As the plants age, the sheaths fall, revealing the bamboo-like trunks. comm.). Cold hardiness down to 15 degrees F. Usda Hardiness zones: 8-12. Grown in shadier conditions, these palms can get up to 8 feet tall or more, but tend to stay under 5 feet in full sun. Inflorescence, male and female similar in general appearance, branching to 2 or 3 orders; prophyll tubular, overlapping the base of the first rachis bract, relatively thin in texture, reddish brown, sometimes darker at the base, inner surface smooth, outer surface with tomentum often only at the distal end; rachis bracts 2 (–3), sometimes with a distal incomplete rachis bract, similar in appearance to prophyll; rachis overall length to 260 mm, 4–8 mm in diam., rachillae 7.5–110 mm long, 0.8–1.9 mm in diam., usually glabrous, pale brown, sometimes with small patches of caducous tomentum. Being a prolific producer of rhizomes adds a fullness to the plant, although growth rate mainly depends on the environment and culture. Excellent for indoor cultivation where it is best planted in a well-drained potting medium. Some of these cultivars, most dwarf in size, can cost a huge amount of money. Leaf spot can be troublesome. This palm can survive periods of drought once established. Leaves however will lose their deep green colouring, will become yellowish green and on the hotter days will probably burn. Rhapis excelsa differs in having glabrous rachis and rachillae at maturity, tomentum often present on the bracts and stamens with broader keeled filaments; not more than three rachis bracts were recorded, while four were recorded for R. humilis. (L. Hastings. It is an easy plant to propagate both by division and seed production. Poor drainage is the single most common reason for root rot in potted plants and, with stale water continually surrounding roots a low oxygen environment develops which is ideal for root rot to take hold. Two specimens [Malay Peninsula, plant house in a tub s.n. Variegated Lady Palm. Foundations. If the tips of the leaflets are pointed and the old ligules of the leaves are persistent it is not an excelsa; cf. A graceful palm for garden areas that allow it room to spread out, this palm grows multiple thin trunks topped with fronds like little green umbrellas. If not contained, an individual palm can spread out over time covering many yards in all directions. Rhapis excelsa NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to form a strategic partnership called N.C. At least two species are sufficiently cold hardy to grow in zone 9a, with some protection. A graceful palm for gardens or a beautiful addition to an indoor space. Genera Palmarum - Evolution and Classification of the Palms. They were first collected by the Japanese for Tokugawa shogunate palaces, then Rhapis popularity spread to Europe, and later to America where its low light and humidity requirements make it a common feature in malls and offices. This is a small palm, often clustering and branching from the ground level, and rarely achieving a height of greater than twelve feet. (L. Hastings. Repotting. Native to China. Locate them in a low-growing ground cover such as mondo grass or lily turf for a dramatic effect. In summer, small panicles of tiny yellow flowers are borne among the leaves. Tolerates some poor light and close to full shade. Rhapis excelsa can be grown in full sun as long as soils are good and adequate water is available. The species epithet for Rhapis Kwamwonzick Siebold has several different spellings in the literature but Kwamwonzick is the only one that is validly published. The reason for this is it is such an easy plant to grow and maintain, with excellent cold tolerance (down to about 20 F), low-light tolerance, modest drought- and wind- tolerance, and amazing pest-resistance. 'variegata', Thailand. It is considered cold hardy down to USDA zone 9A (see http://planthardiness.ars.usda.gov/PHZMWeb/). 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